[英]Exception while removing the items from android listview
我創建了一個包含內容的列表視圖,並為每行使用了刪除按鈕。 在這里,我嘗試使用刪除按鈕從列表視圖中刪除項目。在刪除列表視圖的最后一個元素時,引發ArrayIndexOutOfBound異常。
我用谷歌搜索並找到了一些解決方案,例如:
@Override
public int getCount() {
return lsit.size();
}
和Adapter.notifyDataSetChanged();
但是所有解決方案都無法解決我的問題。
這是我的代碼:
public View getView( final int position, View convertView,final ViewGroup parent) {
final ViewHolder holder;
System.out.println("saved homes list..");
System.out.println("Position: "+m_itemClickedPosition_savedHomes);
if (convertView == null) {
convertView = mInflater.inflate(R.layout.nearbyhomestext, null);
holder = new ViewHolder();
holder.homeTitle = (TextView) convertView.findViewById(R.id.text_title);
holder.homePlan = (TextView) convertView.findViewById(R.id.text_plan);
holder.deleteButton = (Button) convertView.findViewById(R.id.delete_btn);
holder.activeDrawable = getActivity().getResources().getDrawable(R.drawable.gradient_bg_hover);
holder.inActiveDrawable = getActivity().getResources().getDrawable(R.drawable.gradient_bg);
holder.deleteButton.setTag(position);
//holder.deleteButton.setVisibility(View.INVISIBLE);
holder.deleteButton.setOnClickListener(
new Button.OnClickListener() {
@Override
public void onClick(View v) {
System.out.println("Clicked position:"+position);
System.out.println("ArraySize:"+m_savedHomesList.size());
//Integer index = (Integer) v.getTag();
m_savedHomesList.remove(position);
m_savedHomesAdapter.notifyDataSetChanged();
}
}
);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
return convertView;
}
LogCatError:
07-25 14:25:56.187: E/AndroidRuntime(5152): FATAL EXCEPTION: main
07-25 14:25:56.187: E/AndroidRuntime(5152): java.lang.IndexOutOfBoundsException: Invalid index 1, size is 1
07-25 14:25:56.187: E/AndroidRuntime(5152): at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:257)
07-25 14:25:56.187: E/AndroidRuntime(5152): at java.util.ArrayList.remove(ArrayList.java:406)
07-25 14:25:56.187: E/AndroidRuntime(5152): at com.cpt.realtor.tablet.fragments.HomeListFragment$SavedHomeBaseAdapter$1.onClick(HomeListFragment.java:399)
07-25 14:25:56.187: E/AndroidRuntime(5152): at android.view.View.performClick(View.java:2485)
07-25 14:25:56.187: E/AndroidRuntime(5152): at android.view.View$PerformClick.run(View.java:9080)
07-25 14:25:56.187: E/AndroidRuntime(5152): at android.os.Handler.handleCallback(Handler.java:587)
07-25 14:25:56.187: E/AndroidRuntime(5152): at android.os.Handler.dispatchMessage(Handler.java:92)
07-25 14:25:56.187: E/AndroidRuntime(5152): at android.os.Looper.loop(Looper.java:123)
07-25 14:25:56.187: E/AndroidRuntime(5152): at android.app.ActivityThread.main(ActivityThread.java:3687)
07-25 14:25:56.187: E/AndroidRuntime(5152): at java.lang.reflect.Method.invokeNative(Native Method)
07-25 14:25:56.187: E/AndroidRuntime(5152): at java.lang.reflect.Method.invoke(Method.java:507)
07-25 14:25:56.187: E/AndroidRuntime(5152): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:842)
07-25 14:25:56.187: E/AndroidRuntime(5152): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
07-25 14:25:56.187: E/AndroidRuntime(5152): at dalvik.system.NativeStart.main(Native Method)
需要幫助解決此問題。
提前致謝..
嘗試
public int getCount() {
return m_savedHomesList.size();
}
您正在從getView(..)函數中的m_savedHomesList中刪除。 因此,適配器應基於m_savedHomesList。 同樣在getView方法中,只需使用
notifyDataSetChanged();
而不是m_savedHomesAdapter.notifyDataSetChanged();
對於ArrayIndexOutOfBounds
答案是將偵聽器放在return convertView;
之前return convertView;
& notifyDataSetChanged();
您必須創建一個處理程序:
public View getView( final int position, View convertView,final ViewGroup parent) {
final ViewHolder holder;
System.out.println("saved homes list..");
System.out.println("Position: "+m_itemClickedPosition_savedHomes);
if (convertView == null) {
convertView = mInflater.inflate(R.layout.nearbyhomestext, null);
holder = new ViewHolder();
holder.homeTitle = (TextView) convertView.findViewById(R.id.text_title);
holder.homePlan = (TextView) convertView.findViewById(R.id.text_plan);
holder.deleteButton = (Button) convertView.findViewById(R.id.delete_btn);
holder.activeDrawable = getActivity().getResources().getDrawable(R.drawable.gradient_bg_hover);
holder.inActiveDrawable = getActivity().getResources().getDrawable(R.drawable.gradient_bg);
holder.deleteButton.setTag(position);
//holder.deleteButton.setVisibility(View.INVISIBLE);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
// Your listener here
holder.deleteButton.setOnClickListener(
new Button.OnClickListener() {
@Override
public void onClick(View v) {
System.out.println("Clicked position:"+position);
System.out.println("ArraySize:"+m_savedHomesList.size());
//Integer index = (Integer) v.getTag();
m_savedHomesList.remove(position);
mHandler.setEmptyMessage(0);
}
}
);
mHandler = new Handler() { // Don't forget to declare your handler
public void handleMessage(Message msg) {
notifyDataSetChanged();
}
};
return convertView;
}
很高興知道您克服了問題並解決了問題
無論如何,我建議您使用其他方法,因為它會更正確(不過建議還是考慮一下)
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